Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of communicating between a transmitter and a receiver in a wireless multicarrier system comprising the steps of: evaluating a reference signal transmitted periodically by the transmitter to determine at least one predetermined characteristic of a communication channel, the reference signal spanning a maximum bandwidth that the transmitter and the receiver can potentially use; determining a quality of the communication channel based on the evaluation; transmitting an indication of the quality of the communication channel back to the transmitter; selecting in the transmitter, from among a predetermined plurality of carriers and a predetermined plurality of symbol rates, a particular number of carriers and a particular symbol rate at which symbols are transmitted from the transmitter to the receiver based upon the at least one predetermined channel characteristic; and transmitting a group of symbols using the selected number of carriers and the selected symbol rate.
A wireless communication method for multicarrier systems (like OFDM) dynamically adjusts transmission based on channel conditions. The receiver analyzes a reference signal periodically broadcast by the transmitter across the maximum possible bandwidth. Based on this analysis, the receiver determines the communication channel's quality and reports this quality back to the transmitter. The transmitter then selects the optimal number of carriers and symbol rate for data transmission based on the reported channel quality. Finally, the transmitter sends data using the chosen carrier number and symbol rate. This allows the system to adapt to changing wireless conditions for optimal performance.
2. The method of claim 1 wherein the step of selecting chooses the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of channel quality.
This communication method, as described in the previous claim, focuses on selecting the symbol rate and number of carriers based on channel quality. The receiver measures the signal-to-noise ratio (SNR), bit error rate (BER), or other relevant metrics of the communication channel using the reference signal. These metrics are then used by the transmitter to select a symbol rate and the number of carriers. A higher channel quality allows the system to use a higher symbol rate and more carriers, increasing data throughput. Conversely, lower channel quality results in a lower symbol rate and fewer carriers for more robust communication.
3. The method of claim 1 wherein the step of selecting chooses the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of channel traffic.
This communication method, as described in the first claim, selects the symbol rate and number of carriers based on channel traffic. The receiver estimates channel usage by monitoring the activity of other devices or the number of active connections. The transmitter then adjusts the number of carriers and symbol rate to avoid congestion and improve overall system performance. If channel traffic is low, more carriers and a higher symbol rate can be used. If channel traffic is high, fewer carriers and a lower symbol rate are used to minimize interference and ensure fair access to the communication channel.
4. The method of claim 1 wherein the step of selecting chooses the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of regulatory power limits.
This communication method, as described in the first claim, dynamically adjusts the symbol rate and number of carriers based on regulatory power limits. The transmitter selects the number of carriers and symbol rate based on limitations to comply with regulatory requirements. For example, the transmitter will lower the number of carriers and/or symbol rate to reduce transmitted power to comply with regulations. This ensures that the system operates within legal boundaries while maximizing data throughput for a given power constraint.
5. The method of claim 1 wherein the step of selecting chooses the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of interference that exists on the predetermined plurality of carriers.
This communication method, as described in the first claim, selects the symbol rate and number of carriers based on existing interference on the available carriers. The receiver scans for interference across the available carriers using the reference signal. The transmitter then chooses a combination of symbol rate and the number of carriers that avoids the most heavily interfered portions of the frequency spectrum. This reduces errors and improves the reliability of the communication link.
6. The method of claim 5 wherein the interference exists as a result of other transmissions from other transmitters.
In the communication method described previously, the interference that influences carrier and symbol rate selection comes from other transmitters operating in the same or nearby frequency bands. The system actively detects and avoids carriers impacted by these external transmissions. This could involve identifying frequencies used by other Wi-Fi networks, Bluetooth devices, or other wireless technologies, and adjusting the transmission parameters to minimize collisions and maintain data integrity.
7. The method of claim 1 wherein the step of selecting chooses the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of available frequency.
This communication method, as described in the first claim, selects the symbol rate and number of carriers based on the amount of available frequency. The receiver and/or transmitter can determine the available frequency spectrum. The transmitter adjusts the number of carriers and symbol rate according to the frequency available. When more frequency is available, the number of carriers increases and/or symbol rate increases.
8. An apparatus for communicating in a wireless multicarrier system comprising: a receiver; a transmitter; and a controller unit coupled to the transmitter and the receiver, configured for: evaluating a reference signal transmitted periodically by a remote transmitter to determine at least one predetermined characteristic of a communication channel, the reference signal spanning a maximum bandwidth that the transmitter and the receiver can potentially use; determining a quality of the communication channel based on the evaluation; transmitting an indication of the quality of the communication channel back to the transmitter; selecting in the transmitter, from among a predetermined plurality of carriers and a predetermined plurality of symbol rates, a particular number of carriers and a particular symbol rate at which symbols are transmitted from the transmitter to a receiver based upon the at least one predetermined channel characteristic; wherein the transmitter is configured for transmitting a group of symbols using the selected number of carriers and the selected symbol rate.
A wireless multicarrier communication system includes a receiver, a transmitter, and a controller. The receiver analyzes a reference signal broadcast by a remote transmitter to assess channel characteristics. Based on this analysis, the receiver determines the quality of the communication channel and reports this quality back to the transmitter. The transmitter selects the number of carriers and symbol rate for data transmission based on the reported channel characteristics. Finally, the transmitter sends data using the chosen carrier number and symbol rate. The controller manages the receiver and transmitter settings to optimize communication.
9. The apparatus of claim 8 wherein the controller unit is further configured for choosing the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of channel quality.
This wireless communication system, as described in the previous claim, focuses on selecting the symbol rate and number of carriers based on channel quality. The controller within the apparatus measures metrics like SNR or BER derived from the reference signal to determine the quality of the communication channel. The controller uses these metrics to choose a symbol rate and number of carriers. High channel quality allows for a higher symbol rate and more carriers, increasing data throughput. Lower channel quality leads to a lower symbol rate and fewer carriers for improved reliability.
10. The apparatus of claim 8 wherein the controller unit is further configured for choosing the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of channel traffic.
This wireless communication system, as described in claim 8, selects the symbol rate and number of carriers based on channel traffic. The controller monitors channel usage to avoid congestion. The controller then adjusts the number of carriers and symbol rate. When traffic is low, more carriers and a higher symbol rate can be used. When traffic is high, fewer carriers and a lower symbol rate are used to minimize interference and ensure fair access to the communication channel.
11. The apparatus of claim 8 wherein the controller unit is further configured for choosing the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of regulatory power limits.
This wireless communication system, as described in claim 8, selects the symbol rate and number of carriers based on regulatory power limits. The controller selects the number of carriers and symbol rate based on limitations to comply with regulatory requirements. For example, the controller will lower the number of carriers and/or symbol rate to reduce transmitted power to comply with regulations. This ensures that the system operates within legal boundaries while maximizing data throughput for a given power constraint.
12. The apparatus of claim 8 wherein the controller unit is further configured for choosing the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of interference that exists on the predetermined plurality of carriers.
This wireless communication system, as described in claim 8, selects the symbol rate and number of carriers based on existing interference on the available carriers. The controller scans for interference across the available carriers using the reference signal. The controller then chooses a combination of symbol rate and number of carriers that avoids the most heavily interfered portions of the frequency spectrum. This reduces errors and improves the reliability of the communication link.
13. The apparatus of claim 12 wherein the interference exists as a result of other transmissions from other transmitters.
In the wireless communication system previously described, the interference that influences carrier and symbol rate selection comes from other transmitters operating in the same or nearby frequency bands. The system actively detects and avoids carriers impacted by these external transmissions. The controller identifies frequencies used by other Wi-Fi networks, Bluetooth devices, or other wireless technologies and adjusts the transmission parameters to minimize collisions and maintain data integrity.
14. The apparatus of claim 8 wherein the controller unit is further configured for choosing the particular symbol rate at which symbols are transmitted and the particular number of carriers used based upon the at least one predetermined channel characteristic of available frequency.
This wireless communication system, as described in claim 8, selects the symbol rate and number of carriers based on the amount of available frequency. The controller can determine the available frequency spectrum. The controller adjusts the number of carriers and symbol rate according to the frequency available. When more frequency is available, the number of carriers increases and/or symbol rate increases.
Unknown
October 17, 2017
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